| A Study on Low Temperature Synthesis of BaTi03 |
A. N. VIRKAR, K. BANDYOPADHYAY AND A. PAUL
Pages : 78-81
DOI : 10.1080/0371750X.1985.10822746 |
| Abstract |
| Barium titanate, a well-known ceramic capacitor material prepared
by conventional techniques of solid state reaction between BaO and
TiO., requires high maturing temperature, i.e. 1250° -1300°C, which
admittedly increases the cost of the product. In this investigation,
alternative routes of preparation of BaTi03, e.g. co-precipitation
method and oxalate method are followed and compared to that by
solid state reaction using TiCl4--derived Ti02• These alternatives are
expected to reduce particle size and consequently the formation/
sintering temperature of BaTi03• The lowest formation temperature,
obtained in case of the oxalate method, was found to be 750°C, In
case of oxalate and coprecipitation method, formation of an intermediate
step of barium titanyl oxalate and hydroxides was confirmed
by using IR spectrophotometer. The particle size of the final product
was studied by using scanning electron microscope. |
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